NonStringException while making a REST API call
Hi,
within a custom component I make a REST API call to get all recent threads of my community. From this result I read the author informationen for every thread and make a second REST API call to get ranking information about the author:
<#assign author = rest(thread.messages.topic.author.@href + "/ranking") />
Up to this point, everything works fine.
Now, I want to take my author object and make another REST API call to read the URL for the <right_image>-Tag:
<#if author.ranking.display.right_image?has_content>
<#assign imageUrl = author.ranking.display.right_image.url />
console.log("${imageUrl}");
</#if>
After this call I get a Freemarker NonStringException:
NonStringException:For "${...}" content: Expected a string or something automatically convertible to string (number, date or boolean), but this evaluated to a sequence+hash (wrapper: f.e.dom.NodeListModel):
Could someone explain why this exception occurs?
Thanks for your help and best regards.
Christian
That's the sort of error message you get when you try to reference a property of an object that doesn't exist, or isn't directly convertible to a string (e.g. another object).
My guess is that URL property of author.ranking.display.right_image is not set. You can test this with code like this:
<#if author.ranking.display.right_image?? && author.ranking.display.right_image.url??> <#assign imageUrl = author.ranking.display.right_image.url /> console.log("${imageUrl}"); </#if>I would also recommend putting looking at the data you're working with by putting the appropriate REST API url in your browser.
